I am using Exenma Security Horizon (B) for a while now. I have installed this device on my shutter door. This is a really good and innovative security device. I am fully satisfied with this product. The quality is also good. It is a very useful security device.

I am using Exenma Security Horizon (B). This is an innovative security device. The quality is also good. I highly recommend this product to others.

I am using Exenma Security Horizon (B). I am fully satisfied with this product. This security device works perfectly. Also the battery back up is really good.